/* =============================================================================
   PT. Artagas Primandiri — Main Stylesheet
   Urutan: 1) Token  2) Dasar  3) Utilitas  4) Komponen  5) Bagian halaman
           6) Animasi  7) Responsif
   ========================================================================== */

/* -----------------------------------------------------------------------------
   1) Token Desain
   -------------------------------------------------------------------------- */
:root {
  /* Warna merek */
  --color-navy-900: #071E45;
  --color-navy-800: #0B2A5B;
  --color-navy-700: #123A78;
  --color-navy-600: #1B4C97;
  --color-red-600: #C81B22;
  --color-red-500: #E31E24;
  --color-red-400: #F0393F;
  --color-green-500: #7BA82C;

  /* Warna netral */
  --color-surface: #FFFFFF;
  --color-surface-muted: #F4F7FC;
  --color-surface-soft: #FAFBFE;
  --color-border: #E2E8F3;
  --color-text-strong: #0B2A5B;
  --color-text-body: #46536B;
  --color-text-muted: #6B7A93;
  --color-text-inverse: #FFFFFF;
  --color-focus: #F5A623;

  /* Tipografi */
  --font-sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs: 0.8125rem;
  --font-size-sm: 0.9375rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.75rem;
  --line-height-tight: 1.2;
  --line-height-normal: 1.65;

  /* Jarak */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;

  /* Bentuk dan bayangan */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(11, 42, 91, 0.06);
  --shadow-md: 0 12px 28px rgba(11, 42, 91, 0.10);
  --shadow-lg: 0 24px 60px rgba(11, 42, 91, 0.18);

  /* Gerak */
  --transition-fast: 150ms ease;
  --transition-base: 260ms cubic-bezier(0.22, 0.61, 0.36, 1);
  --transition-slow: 520ms cubic-bezier(0.22, 0.61, 0.36, 1);

  /* Tata letak */
  --container-width: 1200px;
  --header-height: 148px;
}

/* -----------------------------------------------------------------------------
   2) Dasar
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--space-md));
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--color-text-body);
  background-color: var(--color-surface);
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  margin: 0;
  color: var(--color-text-strong);
  line-height: var(--line-height-tight);
  letter-spacing: -0.01em;
}

p { margin: 0; }

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: var(--color-navy-700);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover { color: var(--color-red-500); }

img,
svg { display: block; max-width: 100%; }

button { font: inherit; }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* -----------------------------------------------------------------------------
   3) Utilitas
   -------------------------------------------------------------------------- */
.container {
  width: min(100% - 2.5rem, var(--container-width));
  margin-inline: auto;
}

.icon {
  width: 20px;
  height: 20px;
  flex: none;
}

.skip-link {
  position: absolute;
  left: var(--space-md);
  top: -100px;
  z-index: 100;
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-navy-800);
  color: var(--color-text-inverse);
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus-visible {
  top: var(--space-md);
  color: var(--color-text-inverse);
}

/* -----------------------------------------------------------------------------
   4) Komponen
   -------------------------------------------------------------------------- */

/* 4.1 Tombol -------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.8rem 1.6rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-base),
              background-color var(--transition-fast), color var(--transition-fast),
              border-color var(--transition-fast);
}

.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }

.button--red {
  background-color: var(--color-red-500);
  color: var(--color-text-inverse);
  box-shadow: 0 8px 20px rgba(227, 30, 36, 0.28);
}

.button--red:hover {
  background-color: var(--color-red-600);
  color: var(--color-text-inverse);
  box-shadow: 0 12px 26px rgba(227, 30, 36, 0.34);
}

.button--navy {
  background-color: var(--color-navy-800);
  color: var(--color-text-inverse);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
}

.button--navy:hover {
  background-color: var(--color-navy-700);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-md);
}

.button--ghost {
  background-color: transparent;
  color: var(--color-text-inverse);
  border-color: rgba(255, 255, 255, 0.7);
}

.button--ghost:hover {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--color-text-inverse);
  border-color: var(--color-text-inverse);
}

.button--block { width: 100%; }

/* 4.2 Tautan panah -------------------------------------------------------- */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy-700);
}

.link-arrow .icon { transition: transform var(--transition-base); }
.link-arrow:hover .icon { transform: translateX(5px); }

/* 4.3 Header dan navigasi ------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.site-header.is-scrolled { box-shadow: var(--shadow-md); }

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
  padding-block: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: inherit;
}

/* Logo perusahaan memakai rasio asli 4:3, bukan bujur sangkar. */
.brand__mark {
  width: 68px;
  height: auto;
}

.brand {
  min-width: 0;
  flex: 1 1 auto;
}

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-navy-800);
  letter-spacing: 0.01em;
}

.brand__tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.site-header__aside {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex: none;
}

.partner-badge {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  flex: none;
}

.partner-badge__label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.partner-badge__logo {
  height: 30px;
  width: auto;
}

.site-nav { border-top: 1px solid var(--color-border); }

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
  gap: var(--space-md);
}

.primary-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.primary-nav__item { position: relative; }

.primary-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 1.05rem var(--space-md);
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-strong);
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.primary-nav__link:hover,
.primary-nav__link[aria-expanded="true"] { color: var(--color-red-500); }

.primary-nav__link.is-active {
  color: var(--color-red-500);
  border-bottom-color: var(--color-red-500);
}

.primary-nav__caret {
  width: 11px;
  height: 8px;
  transition: transform var(--transition-base);
}

.primary-nav__link[aria-expanded="true"] .primary-nav__caret { transform: rotate(180deg); }

.dropdown {
  position: absolute;
  top: calc(100% - 4px);
  left: 0;
  min-width: 230px;
  padding: var(--space-xs);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

.dropdown.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown__link {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-body);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown__link:hover {
  background-color: var(--color-surface-muted);
  color: var(--color-navy-800);
}

.nav-phone { padding: 0.65rem 1.25rem; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) 0;
  background: none;
  border: 0;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy-800);
  cursor: pointer;
}

.nav-toggle__icon,
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  display: block;
  width: 22px;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav-toggle__icon { position: relative; }

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__icon::before { top: -7px; }
.nav-toggle__icon::after { top: 7px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background-color: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: translateY(-7px) rotate(-45deg); }

/* 4.4 Kartu produk -------------------------------------------------------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.product-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(27, 76, 151, 0.35);
  box-shadow: var(--shadow-md);
}

.product-card__media {
  flex: none;
  width: 92px;
  display: grid;
  place-items: center;
}

.product-card__media img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 14px rgba(11, 42, 91, 0.22));
  transition: transform var(--transition-base), filter var(--transition-base);
}

.product-card:hover .product-card__media img {
  transform: translateY(-4px) scale(1.08) rotate(-2deg);
  filter: drop-shadow(0 16px 20px rgba(11, 42, 91, 0.3));
}

.product-card__body { display: grid; gap: var(--space-xs); }

.product-card__title {
  font-size: var(--font-size-xl);
  color: var(--color-navy-800);
}

.product-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-body);
}

/* 4.5 Kartu bantuan ------------------------------------------------------- */
.help-card {
  padding: var(--space-xl);
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.help-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xs);
}

.help-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-body);
  margin-bottom: var(--space-lg);
}

.help-card__meta {
  margin: var(--space-lg) 0 0;
  display: grid;
  gap: var(--space-sm);
}

.help-card__row {
  display: grid;
  gap: 2px;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

.help-card__row dt {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.help-card__row dd {
  margin: 0;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy-800);
}

/* 4.6 Formulir ------------------------------------------------------------ */
.contact-form {
  display: grid;
  gap: var(--space-md);
  padding: var(--space-xl);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-form__title { font-size: var(--font-size-xl); }

.field { display: grid; gap: var(--space-2xs); }

.field__label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy-800);
}

.field__input {
  width: 100%;
  padding: 0.75rem var(--space-md);
  font: inherit;
  font-size: var(--font-size-sm);
  color: var(--color-text-strong);
  background-color: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast),
              background-color var(--transition-fast);
}

.field__input:hover { border-color: rgba(27, 76, 151, 0.4); }

.field__input:focus {
  outline: none;
  background-color: var(--color-surface);
  border-color: var(--color-navy-600);
  box-shadow: 0 0 0 4px rgba(27, 76, 151, 0.14);
}

.field__input--area { resize: vertical; min-height: 120px; }

.field__input.is-invalid {
  border-color: var(--color-red-500);
  box-shadow: 0 0 0 4px rgba(227, 30, 36, 0.12);
}

.field__error {
  min-height: 1.1rem;
  font-size: var(--font-size-xs);
  color: var(--color-red-600);
}

.contact-form__status {
  min-height: 1.2rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy-700);
}

.contact-form__note {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* 4.7 Tombol kembali ke atas ---------------------------------------------- */
.back-to-top {
  position: fixed;
  right: var(--space-lg);
  bottom: var(--space-lg);
  z-index: 50;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: var(--color-text-inverse);
  background-color: var(--color-navy-800);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition-base), transform var(--transition-base),
              visibility var(--transition-base), background-color var(--transition-fast);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-red-500);
  color: var(--color-text-inverse);
}

/* -----------------------------------------------------------------------------
   5) Bagian Halaman
   -------------------------------------------------------------------------- */

/* 5.1 Kerangka bagian ----------------------------------------------------- */
.section { padding-block: var(--space-3xl); }
.section--light { background-color: var(--color-surface); }
.section--muted { background-color: var(--color-surface-muted); }

.section--navy {
  background: linear-gradient(140deg, var(--color-navy-900), var(--color-navy-700));
  color: rgba(255, 255, 255, 0.85);
}

.section__header {
  max-width: 620px;
  margin: 0 auto var(--space-2xl);
  text-align: center;
}

.section__eyebrow {
  margin-bottom: var(--space-xs);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-red-500);
}

.section__title {
  position: relative;
  display: inline-block;
  padding-bottom: var(--space-sm);
  font-size: var(--font-size-2xl);
  text-transform: uppercase;
}

.section__title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 62px;
  height: 3px;
  border-radius: 3px;
  background-color: var(--color-red-500);
  transform: translateX(-50%);
}

.section__title--left { display: block; text-transform: none; }
.section__title--left::after { left: 0; transform: none; }

.section__title--light { color: var(--color-text-inverse); }

.section__subtitle {
  margin-top: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* 5.2 Hero ---------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1000px 520px at 12% 0%, rgba(27, 76, 151, 0.55), transparent 62%),
    linear-gradient(125deg, var(--color-navy-900) 0%, var(--color-navy-800) 46%, var(--color-navy-700) 100%);
  color: rgba(255, 255, 255, 0.86);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(115deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 46px);
  opacity: 0.7;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  text-align: center;
  padding-block: calc(var(--space-3xl) + var(--space-lg)) calc(var(--space-3xl) + var(--space-2xl));
}

.hero__eyebrow {
  margin-bottom: var(--space-md);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}

.hero__title {
  max-width: 20ch;
  font-size: var(--font-size-3xl);
  color: var(--color-text-inverse);
}

.hero__title-accent { color: var(--color-red-400); }

.hero__description {
  max-width: 60ch;
  margin-top: var(--space-lg);
  font-size: var(--font-size-md);
  color: rgba(255, 255, 255, 0.82);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.hero__curve {
  position: absolute;
  left: -5%;
  right: -5%;
  bottom: -60px;
  height: 130px;
  background-color: var(--color-surface);
  border-radius: 50% 50% 0 0;
}

/* 5.3 Pita nilai ---------------------------------------------------------- */
.value-strip {
  padding-block: var(--space-xl);
  background-color: var(--color-surface-muted);
  border-block: 1px solid var(--color-border);
}

.value-strip__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-lg);
}

.value-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.value-item__icon {
  flex: none;
  width: 38px;
  height: 38px;
  color: var(--color-navy-700);
}

.value-item__title {
  font-size: var(--font-size-md);
  margin-bottom: 2px;
}

.value-item__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* 5.4 Keunggulan ---------------------------------------------------------- */
.advantage {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: start;
}

.advantage__list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding-right: var(--space-md);
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.advantage-item:last-child { border-right: 0; }

.advantage-item__icon {
  flex: none;
  width: 34px;
  height: 34px;
  color: var(--color-text-inverse);
}

.advantage-item__title {
  font-size: var(--font-size-md);
  color: var(--color-text-inverse);
  margin-bottom: 2px;
}

.advantage-item__text {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.72);
}

/* 5.5 Tentang kami -------------------------------------------------------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: center;
}

.about__text { margin-top: var(--space-md); }

.about__points {
  display: grid;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
}

.about__points li {
  position: relative;
  padding-left: var(--space-lg);
  font-size: var(--font-size-sm);
}

.about__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--color-red-500);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.stat-card {
  display: grid;
  gap: var(--space-2xs);
  padding: var(--space-lg);
  background-color: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-card__value {
  font-size: var(--font-size-2xl);
  color: var(--color-navy-800);
}

.stat-card__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* 5.6 Layanan ------------------------------------------------------------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.service-card {
  position: relative;
  padding: var(--space-xl);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background-color: var(--color-red-500);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.service-card:hover::before { transform: scaleY(1); }

.service-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xs);
}

.service-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-body);
}

/* 5.7 Panduan dan tanya jawab --------------------------------------------- */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}

.guide-card {
  padding: var(--space-lg);
  background-color: var(--color-surface-muted);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), background-color var(--transition-base);
}

.guide-card:hover {
  transform: translateY(-4px);
  background-color: var(--color-surface-soft);
}

.guide-card__step {
  display: inline-block;
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-red-500);
}

.guide-card__title {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-2xs);
}

.guide-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.faq {
  max-width: 860px;
  margin: var(--space-3xl) auto 0;
}

.faq__title {
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-xl);
  text-align: center;
}

.faq__list { display: grid; gap: var(--space-sm); }

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-base);
}

.faq-item:hover { border-color: rgba(27, 76, 151, 0.35); }
.faq-item:has(.faq-item__question[aria-expanded="true"]) { box-shadow: var(--shadow-sm); }

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: none;
  border: 0;
  text-align: left;
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-navy-800);
  cursor: pointer;
}

.faq-item__icon {
  flex: none;
  width: 13px;
  height: 13px;
  color: var(--color-red-500);
  transition: transform var(--transition-base);
}

.faq-item__question[aria-expanded="true"] .faq-item__icon { transform: rotate(135deg); }

.faq-item__answer {
  padding: 0 var(--space-lg) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-body);
  animation: fade-in var(--transition-base) both;
}

/* 5.8 Kontak -------------------------------------------------------------- */
.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: start;
}

.contact__lead { margin-top: var(--space-md); }

.contact-list {
  display: grid;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.contact-list__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  color: var(--color-navy-700);
}

.contact-list__label {
  display: block;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.contact-list__value {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy-800);
}

/* 5.9 Footer -------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-navy-900);
  color: rgba(255, 255, 255, 0.7);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: var(--space-xl);
  padding-block: var(--space-2xl);
}

.site-footer__brand {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

/* Latar terang agar sapuan hitam pada logo tetap terbaca di atas navy. */
.site-footer__mark {
  width: 64px;
  padding: var(--space-xs);
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
}

.site-footer__name {
  display: block;
  margin-bottom: var(--space-xs);
  font-size: var(--font-size-md);
  color: var(--color-text-inverse);
}

.site-footer__text {
  font-size: var(--font-size-sm);
  max-width: 42ch;
}

.site-footer__partner {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  width: fit-content;
}

.site-footer__partner img { height: 22px; width: auto; }

.site-footer__partner-label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.site-footer__heading {
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-inverse);
}

.site-footer__list {
  display: grid;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
}

.site-footer__list a { color: rgba(255, 255, 255, 0.72); }
.site-footer__list a:hover { color: var(--color-text-inverse); }

.site-footer__bottom {
  padding-block: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: var(--font-size-xs);
  text-align: center;
}

/* -----------------------------------------------------------------------------
   6) Animasi
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.is-revealed {
  opacity: 1;
  transform: none;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal { opacity: 1; transform: none; }
}


/* -----------------------------------------------------------------------------
   7) Responsif
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  :root { --font-size-3xl: 2.35rem; }

  .hero__title { max-width: 24ch; }

  .advantage,
  .about,
  .contact { grid-template-columns: 1fr; }

  .advantage__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .advantage-item { border-right: 0; }

  .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  :root { --header-height: 78px; --space-3xl: 3rem; }

  /* Header dipadatkan jadi satu baris: merek di kiri, tombol menu di kanan. */
  .site-header__bar {
    flex-wrap: nowrap;
    padding-block: var(--space-sm);
  }

  .brand__name { font-size: 1rem; }
  .brand__tagline { font-size: 0.72rem; }
  .partner-badge { display: none; }
  .nav-toggle { display: flex; }

  .site-nav { border-top: 0; }

  .site-nav__inner {
    flex-direction: column;
    align-items: stretch;
  }

  .primary-nav {
    display: block;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    border-top: 1px solid var(--color-border);
    transition: max-height var(--transition-base), opacity var(--transition-base),
                visibility var(--transition-base), padding var(--transition-base);
  }

  .primary-nav.is-open {
    max-height: 36rem;
    opacity: 1;
    visibility: visible;
    padding-block: var(--space-xs) var(--space-md);
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .primary-nav__link {
    width: 100%;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .primary-nav__link.is-active { border-bottom-color: var(--color-red-500); }

  .dropdown {
    position: static;
    display: none;
    min-width: 0;
    border: 0;
    box-shadow: none;
    background-color: var(--color-surface-muted);
  }

  .dropdown.is-open { display: block; transform: none; }

  .nav-phone {
    justify-content: center;
    width: 100%;
    margin-top: var(--space-md);
  }

  .product-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .product-card__media { width: 76px; }
}

@media (max-width: 620px) {
  :root { --font-size-3xl: 1.95rem; --font-size-2xl: 1.6rem; }

  .container { width: min(100% - 2rem, var(--container-width)); }

  .brand__mark { width: 46px; }
  .brand__tagline { display: none; }

  .brand__name {
    font-size: 0.86rem;
    white-space: nowrap;
  }

  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .button { width: 100%; }

  .section { padding-block: var(--space-2xl); }
  .section__header { margin-bottom: var(--space-xl); }

  .advantage__list,
  .stat-grid,
  .site-footer__grid,
  .value-strip__list { grid-template-columns: 1fr; }

  .contact-form,
  .help-card { padding: var(--space-lg); }

  .faq-item__question { padding: var(--space-sm) var(--space-md); }
  .faq-item__answer { padding: 0 var(--space-md) var(--space-sm); }

  .back-to-top {
    right: var(--space-md);
    bottom: var(--space-md);
  }
}

@media (max-width: 380px) {
  .brand__name { font-size: 0.8rem; }
  .brand__mark { width: 40px; }
  .nav-toggle__label { display: none; }
}


/* -----------------------------------------------------------------------------
   8) Halaman Galat
   -------------------------------------------------------------------------- */
.error-page {
  display: grid;
  justify-items: center;
  gap: var(--space-sm);
  min-height: 100vh;
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  align-content: center;
  background:
    radial-gradient(760px 400px at 50% 0%, rgba(27, 76, 151, 0.10), transparent 70%),
    var(--color-surface);
}

.error-page__logo { width: 96px; height: auto; }

.error-page__code {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-red-500);
}

.error-page__title { font-size: var(--font-size-xl); }

.error-page__text {
  max-width: 46ch;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}